Dump car



W. P. MURPHY.

DUMP CAR.

APPLICATION FILED 1AN.25. 1919.

4 SHEETS-smul.

w. P. MURPHY. DUMP CAR.

APPLCATIGN FILED 1AN.25, 19H);

Lsfm y mmm M M? 4 SHEETS-SHEET 2.

W. P. MURPHY.

DUMP CAR.

APPLICATION HLED 1,\N.25,19x9.

4 SHEETS-SHEET 3:

W. F MURPHY,

DUN? CAR.

APPLICATIN FiLEl )A7-6.25.1919.

(gygygggjs Patented Een 3.4, i922,

4 SHEETS-SMH 4D filo TATES v (gam lli lli didi Wennen 12. Menen-r, osnew wenn;

PATENT OFFICE..

DUMP CAR.

Application filed January 25, i919. Serial No. 273,l16.

T0 aZZ 'whom t may concern :Se it known that Wei/rer. P. MURPHY, acitizen of the. United States, residing at New 'Yoi'k'city, in thecoiiiitj.v oiP New York and State of Kew York. have invented certain newand useful improvements in Dump iger-s, of which the `following is aspecilication.

My invention relates to railway dump cars.. and particularly to theconstruction. of 'the doors or hinged bottoni panels in cars of thistype; and the primary object of the invention is to provide a door orbottoin panel which will be. very strong and rigid so that it will notysag` under thc load or become bent oii warped, ander the stresses towhich it is subjected and which, inoieovci', will present a smooth andunobstructed surface incontact with the cargo over which the cargo willreadily slide when it is dumped. Considerable difficulty has beenexperienced .in carsot' this type due to the sagging. warping andbending ot the bottoni doors, which as will be readily understood, aresubjected to very heavy pressures from the bulk inaterial with whichthese cars are loaded. and are liable to other strains when manipulateddue. to clogging of the parts with ice or other substances. Riny warpingof the hinged bottoni doors or panels is likely to interfere with theproper manipulation oi the dumpinginechenisin oi the car besides makingrthe car leaky. lt has been customar)v fito reinforce these doors withangle barsri'veted to the under side thei'eoil but this expedient hasnot proved altogether satisaciory, so far as giving the requisitestrength and rigidity. illoreover, any suoli reinforcement adds to theweight of the doors besidesnialzing the upper surfaces ot' the doorsrongh. Vln order that the cargo oi j nilveriilent. material` such sandor, coal in' that state, should ibe readily discharged, the uppersurfaces of the. doors ought be as smooth as possible so that the loadwill readily slide over the saine when the doors are let, down. it thedoors are studded 'with rivets cargo oi? this sort will oit/en clog;particularly if rnoist. My inveir tion provides a bottom door for a dumpcar which /av'oids these objections and :it the saine 'time is strong;and sutliciently rigid to all requirements. The door, hown ever, has ecertain elasticity or .flexibility which given the structure capacity-tolspring to its original shape when su jected i 1 or diiiei'ent designand construction. l have i shown in the drawings annexed hereto. andwill describe in the following' speciication two well known types ofrailroad dunip carsfiirnislied with the hinged dumping doors constructedin. accordance with the "princi ples of iny invention, withthe'iinderstzinding. however, that these embodiments oi the inventionere merely...i11nstrative l ln the drawings, 4

Fig. l. is a-,ftragmentary plan view o one of the illustrativeembodiments of inv invention just referred to. n

Fig. 2 is a sectional `view on line 2-2 oi. Fig. l.

Fig. 3 is a plan View of the sheet motel panel forming one of the doorsof the car shown ,in 'the preceding two'iigures.

Vig. l is a sectional view on line fl-- of Fig'. 3.

Fig. 5 is a fragmentary sectional view on line 5-5 oflig. el. f

Fig. 6 is a fragmentary longitudinal sectional View of the otherillustrative einhodinient `of the invention.

Fig. 'T isv .a fragmentary plan view or" the saine.

Fig. 8 is a. vertical sectional view on line s s of Fig. t.

Fig. 9 is a plan view, scale, of one pair of doors.

l() .is a sectional view on line :iO-l0 of Fig. 8, and

Fig. ll is a view, in perspective, of one corner of the door panel.

on an enlarged Like'charecters of reference designate 'like 'parts inthe several igures of the drawings.

Referring First to Figs. 1 to 5 inclusive, indicates the center sill otthe cer., I26 one oi the holsters, 27, Q? the side walls, 28, 223 theend valle, E29 the outside side wall stakes, and 30 the interior stakeswhich engage the bolster.

it will1 notJ be necessary to describe in detail 'the general structureof the car as my" invention is confined to the construction andarrangement of the bottom'dOOrs.

Each door consists of a sheet of metel 3l which, in the type of carunder considerav tion, is hinged to the center sills by hinges 32.Chains 33 engage brackets 34 on the antler edges of the doors. ThesechainsI form part of the dumping mechanism which is manipulated to dropor raise the doors.

The panel 31 is formed with a plurality of substantially parallel.corrugations 35 which arexpreferably upwardly pressed from the sheet andwhich terminate Within the edges of the sheet so as to leave flatmargins 36. lhe corrngations extend transversely of the car7 that is tosay, in the direction in which the cargo moves when it is dumped. Thesecorrngations merge one into the other so that the panel has a sinuonsconfiguration in cross section This conlignration gives the panel veryconsiderable strength. The corrngations act as'beams to transmit thestresses exerted against it by the cargo from one edge of the panel' toIthe other. Each corrngation rigidies the other due to the merging oione into the other so that if the pressure on one corrugation is greaterthan on anotheijthere will be a disposition of stresses from onecorrugation to another which aids in preventing undue deflection.

y Moreover, the sinuous configuration of the il il panel givesit acertain increased elasticity whereby it will tend to resume its originalsha-pe iftlie force is such that some deflection is unavoidable Theedges of the panel are provided with a rigidiying element consist` ingpreferably of an integral downturned 'lange 37 which preferably extendscontinuously around all four edges of the sheet. ri`lie portions of thisflange along the edges parallel with 'the corrngations are preferablygiven a truss-shape, as indicated at These are the unsupported edges ofthe door and consequent-ly require more reinforcement than the otheredges which are engaged by v the hinges or chains. The truss-likeflanges cooperate with the corrngations to give a panel the requiredstrength and stiffness on lines transverse of the car. lt is along theselines that deflection under the load is likely to occnr.

l modit'ied construction to suit a somewhat different type oi: car isshown in Figs. (3 to li, inclusive. in this type of car the doors arehinged on' lines running rrosswise of the car instead of lengthwisethereof and operate in sets of'fonr. The side walls of car Show-n at 3f)and the lix'ed slopingr bottom sheet at one end of the car is indicatedby numeral 4l), il structure 41er:- tends the length ot the carpresentingin plan two somewhat sloping surfaces 42, 42. this structureforming. in effect, a part of the center sill of the car. Transvcrselyof the car aty intervals are fixed structures 455 having approximately'an inverted V-'shape in cross section. They entend. in each case, fromthe side walls of the car to the longitndinal structure 42. The hopp'fhformed by the side walls of the car, the longitudinal structure 4l, thelined bottom sheet 40 and the transverse structure 43 are closed at thebottom, in each case, by a pair of doors 44, v45, the former beinghinged at 46 to one of the transversevstrnctures 43 and the latter beinghinged at 47 tothe fixed bottom sheet 40. wEach of these doors consistsof a sheet metal anel formed with corrugations 46 extending transverselythereof, that is, longitudinally with `respect to the-car. These panelsare formed, except on their meeting edges, with downturned flanges 48,49, these flanges bein rigidly united by corner angles 50. Secure( tothe under sideo the meeting edges of the panels are angle bars 5l whichextend under the longitudinal structure 41 and are connected with thecorrespending edges of the aligning doors on the other side of the car.The flanges 48 are preferably secured to the angle bars 51 by members52. The mechanism for operating the doors is engaged with .the anglebars 51, the chains forming part of this mechanism being indicated indotted lines at '53 (Fig. 6). This mechanism forms no part of myinvention and need not be described.

I claim:

l. In a railway dump car, the combination with the body of the car, of ahinged door forming part of the bottom of the car andv adapted to assumean inclined position for dumping, comprisingr a' sheet steel panelformed with rigidil'ying means at its edges and with corrugations whichare pressed upwardly from the plane of the panel and extend in thedirection of movement of the cargo when dumped.

2. In a railway dump car, the combination with the body of the car, ofrahinged door 'forming part. of the bottom of the car and adapted toassume an inclined position for dumping, comprising a sheet steel panelformed with rigidifying means at its edges land with a plurality ofparallel corrugations which are pressed upwardly from the plane Y or'the panel and terminate within the edges of said sheet and extend in theydirection of movement ot' the cargo when dumped.

3l In a railwa dump car, the combination with the body o the car, of ahinged door formingpart of the bottom of the car and adapted to assumean inclinedposition for dumping, comprising a sheet steel` panelformedwith rigiditying means at its edges and with corrugations whichterminate with` in the edges of the sheet, project upwardly.

from the plane of the margins of the sheet, and extend in the directionof movement of the cargo when dumped.

4. In a railway dump car, the combination with the body of the car, of ahinged door forming part of the bottom of the oar and adapted to assumean inclined position for dumping, comprising a sheet steel panel formedwith downturned rigidifying flanges at its edges and with corrugationsforming parallel furrows above the plane of the sheet which extend inthe direction of movement of the cargo when dumped.

5. ln a railway dumpcar, the combination with the body of the car, of ahinged door forming part of the bottom of the car and adapted to assumean inclined position for dumping, comprising a sheet steel panel formedwith an integral, continuous, downturned rigidifying flange around itsedges and with up pressed corrugations which provide parallellfurrowsabove the plane of the sheet and. extend in the direction of vmovementof the cargo when'dumped.

7. ln a railway dump car, the combination with the body ot the car, of ahinged door# forming part of the bottom of the car and adapted to assumean inclined position for dumping, comprising a sheet steel panel. formedwith an integral, continuous, down- 'turned rigidifying `Hange aroundits edges and with parallel corrugations which extend in the directionof movement of tlie cargo when dumped, terminate within the edges of thesheet and project upwardly from the plane of the margins of the panel.

8. In a. railway dump oar, the combination with thebodly of the car, ofa hinged door forming part of the bottom of the car and adapted toassume an inclined position for dumping, comprising a sheet steel panellormednwith downturned rigidifying ianges at its edges and with aplurality of corrugations which terminate within the edges of the sheet,project upwardly from the Plane of the margins of the panel and extendin the direction of the movement of the cargo when dumped.

9. In a railway dump ear, the combination with the body of the car, of ahinged door forming part of the bottoni of the car and adapted to assumean inclined position for dumping, comprising'r a sheet steel panelformed with corrugations which entend in the direction of movement ofthe cargo when dumped and with downturned flanges, wider at the middlethan at the ends, along the edges arallel to said corrugations.

10. n combination with the body of a railway dump car, of a door, means'for hing; ing the door to the bottom oi the car body, means forsupporting the edge of the door opposite the hinges when the doorisclosed;

the door comprising a sheet metal panelv Jformed with corrugations whichextend sub stantially from the hinged edge of the` door to said oppositeedge, and provided with4 means constituting a unitary rigidifying element extending around the edges ot the door to the bottom thereof.

11. A hinged door for a railway dump car comprising a sheet metal panelprovided on the outside with rigidifying means extending around itsedgesv and formed with corrugations which project inwardly of the car,pro vidinor furrows above the plane of said panel and lie in thedirection of movement of the cargo when dumped.

l2. A hinged door for a railway dump car compiising a sheet metal panelformed with outturned rigidifying flanges at its edges vand withcorrugations which termina-te within the edges of the panel, projectinwardly of the car so as to provide furrows above the pla-ne of saidpanel and lie in the direction of movement of the cargo when dumped.

' 13. A hinged door for a railway dump car,

comprising a sheet metal panel formed with outtnrned rigidifying flangesunited at the corners of the panel to provide a continuous, rigidifyingelement around the same, said panel being formed with corrugations whichterminate within the sheet and merge one into the other so that thepanel has a sinuous configuration in cross section..

WALTER PfMURPHY.

